I got my LAMP running fine, no PhpMyAdmin, i use HeidiSQL to save some memory. My only problem is that my site´s script (socialengine) is not sending mails, i tried to install Postfix but the library document is too confused to me. Reverse DNS, FQDN, etc... i didn´t get it.

Someone told me to install EHCP Control Panel, so the mail issue would be easier to solve, but i´m worried about server resources, EHCP comes with PhpMyAdmin and i don´t know what else.
Do you think it´s a good idea? To a newby?

Thanks for any words.

Personally I think you should give the linode library guide another go, eventually something will happen that you can't fix with a control panel, better to learn now than later.

FYI Reverse DNS (rDNS) is when you do a DNS lookup on the ip address i.e.

host 72.14.180.202
202.180.14.72.in-addr.arpa domain name pointer www-loadbal1.linode.com.

It's used by mail servers to help prevent spam.

FQDN is fully qualified domain name, i.e. the hostname of your server, normally something like host.yourdomain.com or mail.yourdomain.com

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Thanks obs, for trying to help me. I´ll give it another try and post here my doubts.
Thansk a lot.

If you only need to send, no receive, then exim is a good option as well. Easier to configure than postfix IME